NAME

Mojolicious::Plugin::CSRFProtect - Fully protects you from CSRF attacks

SYNOPSIS

# Mojolicious
$self->plugin('CSRFProtect');

# Mojolicious::Lite
plugin 'CSRFProtect';

# Use "form_for" helper and all your html forms will have CSRF protection token

<%= form_for login => (method => 'post') => begin %>
       <%= text_field 'first_name' %>
       <%= submit_button %>
<% end %>

# Place jquery_ajax_csrf_protection helper to your layout template
# and all non GET/HEAD/OPTIONS  AJAX requests will have CSRF protection token (requires JQuery)

<%= jquery_ajax_csrf_protection %>

# Custom error handling
$self->plugin('CSRFProtect', on_error => sub {
    my $c = shift;
    # Do whatever you want here
    # ...
});

DESCRIPTION

Mojolicious::Plugin::CSRFProtect is a Mojolicious plugin which fully protects you from CSRF attacks.

It does following things:

1. Adds a hidden input (with name 'csrftoken') with CSRF protection token to every form (works only if you use form_for helper from Mojolicious::Plugin::TagHelpers.)

2. Adds the header "X-CSRF-Token" with CSRF token to every AJAX request (works with JQuery only)

3. Rejects all non GET/HEAD/OPTIONS requests without the correct CSRF protection token.

If you want protect your GET/HEAD/OPTIONS requests then you can do it manually

In template: <a href="/delete_user/123/?csrftoken=<%= csrftoken %>">

In controller: $self->is_valid_csrftoken()

CONFIG

on_error

You can pass custom error handling callback. For example

$self->plugin('CSRFProtect', on_error => sub {
    my $c = shift;
    $c->render(template => 'error_403', status => 403 );
});

HELPERS

form_for

This helper overrides the form_for helper from Mojolicious::Plugin::TagHelpers

and adds hidden input with CSRF protection token.

jquery_ajax_csrf_protection

This helper adds CSRF protection headers to all JQuery AJAX requests.

You should add <%= jquery_ajax_csrf_protection %> in head of your HTML page.

csrftoken

returns CSRF Protection token.

In templates <%= csrftoken %>

In controller $self->csrftoken;

is_valid_csrftoken

With this helper you can check $csrftoken manually. It will take $csrftoken from $c->param('csrftoken');

$self->is_valid_csrftoken() will return 1 or 0

AUTHOR

Viktor Turskyi <koorchik@cpan.org>

BUGS

Please report any bugs or feature requests to bug-mojolicious-plugin-csrfprotect at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Mojolicious-Plugin-CSRFProtect. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

Also you can report bugs to Github https://github.com/koorchik/Mojolicious-Plugin-CSRFProtect/

SEE ALSO

Mojolicious::Plugin::CSRFDefender

This plugin followes the same aproach but it works in different manner.

It will parse your response body searching for '<form>' tag and then will insert CSRF token there.

LICENSE AND COPYRIGHT

Copyright 2011 Viktor Turskyi

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.